Valve



Nov. 23 1926. 1,608,004

f w. J. SCHOENBERGER VALV E Filed AugusfI 25, 1924 Suva/M01 v c 11 m Streuung:

Patented Nov. 23, A192,6.

UNITED STATES WILLIAM J. scHoENBERoEnOr CLEVELAND, onro.

VALVE.

Applica-tm mea Agust `aa, 1924. serial No. veasgiaff Myin'vention relates to an improvement -in valves, particularly ina' y,needle valve -or gastburners,y heaters,` etc.,- -and my general objectisto provide ay valve in which the needle member will vbe guided'and held accurately win the center of the gas orifice and operateto discharge-La straight stream of gas Without objectionable obstruction, hindrance and malformation.

In the accompanying. drawings, y

Fig- 1 is a side view of my improved valve quipped With ai detachable stem and hanf Fig. 2 is an elevation of a modified form of the invention, and Fig. 3 is a sectional view thereof. Fig. y 4 is a cross sectional view on line 8-'8 of Fig. 3. Figs. 5, 6 and 7 are enlarged views of the gas nipple, guide ring, and the needle and outlet end of the gas valve, respectively.

In operating certain types of gas burners it is highly desirable and advantageous to jet a straight stream of gas intoA the burner at a high velocity under the control or setting of a needle valve. An off/set or eccentric position of the needle point in the round gas orifice is especially to be avoided, and the flow of gas to and through the orifice should not be impeded, nor eddy currents created within the gas passages. Therefore, I have constructed a valve body 2 having an intake branch 3 communicating direct- 1y with a main gas discharge passage 4 through which a round' needle valve steml 5 is adapted `to extend and control the outow of gas from a small round orifice 6 in the center'of a hollow nipple 7. The round valve stem' 5 is a fixed part of a larger screw-threaded member 8 having a knurled head 9 adapted to be engaged and rotated by hand, and the screw-threaded part v8 ex.- tends into one end of body 2 and engages internal screw-threads therein to effect lonitudinal movement of the valve stem and a xed setting of its pointed end relatively1 to orifice 6. However in tapping the body and forming the screw-threads it is diflicult to center the tapered needle-point of the valve stem relatively to orifice 6 and maintain this central position during longitudinal adjustments of the valve stem. When theneedle point projects through the orifice and is not seated to close it entirely. the needle point must be exactly central in respect to the round orifice if a concentric ring-shaped space `for issuancefof a straight gas stream is `to be'obtained. To gain ,this

desired positioning of parts for all' adjustments of the needleI valve and avoid ec'c'en-y tric settmgs and anl irregular'gas openingl and al laterally 'deflected stream for malformation of 'v the lgas streamfI provide means to positively center and guide the valve stem, and as shown this means comprises a thin perforated diaphragm or ring 23 Within the outlet end of main passage 4, and the valve stem is free to rotate and slidewithin the central opening or perfora-v tion in this ring- The intake passage 3 communicates with main passage 4 at, one side of ring 23 and the as has free and unobstructed iow aroun the valve stem and needle point from passage 3" to the gas orifice. Moreover, the inner end of screw v"nipple 7 is chamfered or beveled inwardly from leakinfr at the handle' end of the valve stem by packing 15 and an adjustable gland member 16 screwed upon bod 2,

l The type of gas valve elineated embodies a plug valve 17 to control the f'low of gas through intake passage 3', and the needle valve remains set after adjustment to any given condition. Plug valve 17 may be provided'with a laterally-extending handle 18 as shown in Fig. 3, or a separate square rod or stem 19 of any desired length may be used to operate the plug valve as shown in Fig.'1. In the latter case a separate removable handle 20 may be affixed to the `outer end of the square stem. A

simple and efficient means of fastening thev handle to the stem and the stem to the valve plug is illustrated in Fig. j 1, and consists 1n providing each end of the stem with a beveled or inclined notch 21 to eiect a tightening and lockingV action :fori a set screw'l The centering and guiding diaphragm or ring 23` for the valve stern is located at the discharge end of body 2 and is a separate piece in the form of a thin fiat spider 23 having radial arms 24 adapted to be seated against a flat annular shoulder 25 at the base of the screw-threaded opening which receives screw-threaded nip le 7. This ring may be -wedged or tightly tted within the plug, or removably clamped in place by lli) nipple 7, and it serves to center and guide the needle end of the valve stem very closely in respect to the gas discharge orifice 6 in the nipple. v

In placing spider-like ring 23 upon seat 25 the ring may be engaged slightly or loosely held by screwing the nipple 7 in-v been retired, thus permanently centering the ring and needle point in respect to the gas orifice.

What I claim as my invention is A gas valve having a .discharge passage, a needle valve extending through said passage, a centering guide within said passage for said needle valve, and Va discharge y .nipple having' a port therein controlled by .said needle Valve having an inwardlychainfered end portion open to said-passage.

In testimony whereof lI aflix my signature.

WILLIAM J. SCHOENBERGER. 

